powerpc/kprobes: Mark newly allocated probes as ROX

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Add the arch specific insn page allocator for powerpc. This allocates
ROX pages if STRICT_KERNEL_RWX is enabled. These pages are only written
to with patch_instruction() which is able to write RO pages.

Signed-off-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
[jpn: Reword commit message, switch to __vmalloc_node_range()]
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210609013431.9805-5-jniethe5@gmail.com

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Russell Currey 2021-06-09 11:34:26 +10:00 • committed by Michael Ellerman

parent 4fcc636615

commit 6a3a58e623

1 changed files with 17 additions and 0 deletions

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arch/powerpc/kernel/kprobes.c

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